11 Paid Templates
Every template below is benchmark-backed — we ran head-to-head comparisons on real projects and measured context-drift reduction, token usage, and task completion rate. These are paid. Free browsing is at the main marketplace.
⭐ Editor's Pick for Backend Devs
Rails 8 + Claude Code Starter
Full CLAUDE.md + 12 rules + 4 hooks + 3 custom skills for Rails 8 projects. Handles ActiveRecord conventions, Hotwire, Solid Queue, asset pipelines, test patterns.
$49 · one-time
Buy now — $49 →
Popular
Next.js 15 + Server Actions
CLAUDE.md + 9 rules + 3 hooks for Next.js 15 App Router. Prevents the "mix server + client component" Claude default error.
$39 · one-time
Buy now — $39 →
New
Data Scientist — Pandas + Jupyter
CLAUDE.md + 7 rules + 2 notebook hooks. Prevents plot-over-data confusion, enforces reproducible seeds, captures notebook outputs.
$29 · one-time
Buy now — $29 →
🛡️ Most Comprehensive
Security Audit Pack
15 rules + 4 skills scoped to secure code review. Catches 23 common OWASP anti-patterns Claude introduces by default.
$99 · one-time
Buy now — $99 →
Persona Context Templates
Identity-first context files that encode your role, constraints, and decision frameworks. Drop into any AI tool — Claude Projects, Custom GPT, Cursor Rules, Gemini. Save weekly hours of repeated context-setting.
📈 Top Seller for Finance Roles
Active Trader
Role context for traders/PMs. Trade journal patterns, risk-discipline framing, market-data interpretation conventions. Encodes how you trade so AI explains markets *the way you think*.
$29 · one-time
Buy now — $29 →
🔥 Most Popular for Solo Founders
Startup Founder
Identity + decision framework for founders/CEOs. Capital efficiency mindset, hiring frames, customer-discovery patterns, board-deck conventions. AI gives founder-grade not generalist advice.
$29 · one-time
Buy now — $29 →
New
Content Creator
Voice + brand guidelines, audience persona library, channel-specific format rules. AI drafts on-brand without copy-edit churn.
$19 · one-time
Buy now — $19 →
New
Senior Developer
Code-review style preferences, language-specific idioms, naming conventions, anti-pattern blacklist. AI writes code in *your* style, not generic.
$29 · one-time
Buy now — $29 →
New
Executive / Operator
Strategic frame, comms style, meeting-notes conventions, OKR/KPI framing. AI summarizes and drafts at executive grain not analyst grain.
$29 · one-time
Buy now — $29 →
New
Marketer / Growth
ICP definitions, channel playbooks, attribution conventions, copy voice. AI plans campaigns in your funnel, not textbook funnel.
$19 · one-time
Buy now — $19 →
New
Real Estate Investor
Underwriting framework, market-thesis encoding, deal-flow filters, syndication patterns. AI evaluates deals through your lens.
$19 · one-time
Buy now — $19 →
Buying multiple templates? The full Brainfile bundle includes all 7 persona templates + the 5 stack templates above + the rules system + agent definitions for $99. (At 4+ templates the bundle pays back instantly.)
Why paid templates exist — Free CLAUDE.md files scattered across GitHub are either toy-level or out of date. Paid templates get benchmarked, tested against real tasks, and updated when Anthropic ships new capabilities. Want your template here? Creator program: 90% revenue share for first 50 creators (first 6 months). Apply to sell →